<template>
    <div class="login_container">
        <div class="login_box">
            <div class="avatar_box">
                <img src="../../assets/logo.png" alt="">
            </div>

            <el-form ref="loginForm" :model="loginForm" :rules="loginFormRules" class="login_form">
                <el-form-item prop="username">
                    <el-input v-model="loginForm.username" prefix-icon="el-icon-user"></el-input>
                </el-form-item>

                <el-form-item prop="password">
                    <el-input type="password" v-model="loginForm.password" prefix-icon="el-icon-lock"></el-input>
                </el-form-item>

                <el-form-item class="btns">
                    <el-button type="primary" @click="login">登录</el-button>
                    <el-button type="info" @click="resetLoginForm">重置</el-button>
                </el-form-item>
            </el-form>
        </div>
    </div>
</template>

<script>
export default {
  name: 'Login',

  data () {
    return {
      loginForm: {
        username: 'admin',
        password: '123456'
      },
      loginFormRules: {
        // 校验中的数据名称必须和表单绑定的名称相同
        username: [
          { required: true, message: '请输入登录名称', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入登录密码', trigger: 'change' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'change' }
        ]
      }
    }
  },

  methods: {
    // 重置
    resetLoginForm () {
      this.$refs.loginForm.resetFields()
    },

    // 登录
    login () {
      this.$refs.loginForm.validate(async (valid) => {
        if (valid) {
          const res = await this.$http.user.login(this.loginForm)
          if (res.meta.status === 200) {
            this.$message({
              message: '登录成功',
              type: 'success'
            })

            // 保存token数据
            window.sessionStorage.setItem('token', res.data.token)

            // 页面跳转
            this.$router.push('/home')
          } else {
            this.$message({
              message: '登录失败',
              type: 'error'
            })
          }
        } else {
          console.log('error submit!!')

          return false
        }
      })
    }
  }
}
</script>

<style lang="less" scoped>
    .login_container {
        background-color: #3d4d6d;
        height: 100%;

        .login_box {
            width: 450px;
            height: 280px;
            background-color: #fff;
            border-radius: 3px;
            position: absolute;
            left: 50%;
            top: 50%;
            /* margin-top: -190px;
            margin-left: -225px; */
            transform: translate(-50%,-50%);

            .avatar_box {
                width: 130px;
                height: 130px;
                border: 1px solid #eee;
                border-radius: 50%;
                padding: 10px;
                box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
                position:absolute;
                left: 50%;
                transform: translate(-50%,-50%);
                background: #fff;
                img {
                    width: 100%;
                    height: 100%;
                    border-radius: 50%;
                    background: #eee;
                }
            }

            .login_form {
                position: absolute;
                bottom: 0;
                width: 100%;
                padding: 0 20px;
                // box-sizing:默认为content-box
                box-sizing: border-box;
                .btns {
                    display: flex;
                    justify-content: flex-end;
                }
            }

        }
    }

</style>
